Naturally, the player would assume that their weakness would be the flute, then, but that's not the case at all. In the instruction manual for The Legend of Zelda, the Pols Voice enemy is said to 'hate loud noise'.
Whatever the case, this tutorial just doesn't do what it's supposed to do, and ends up making the player needlessly frustrated. Or maybe the tutorial is useful, but a Game-Breaking Bug exclusive to the tutorial itself prevents you from completing it. Perhaps the tutorial gives advice that is no longer valid after a game patch. Perhaps it's because of a 'Blind Idiot' Translation perhaps it's because the game swamps the player with mounds of text right out of the gate and expects them to remember everything immediately or, maybe, the tutorial tries to simplify a complex game mechanic into a 'rule of thumb' which ends up being more of a hindrance than a help. Perhaps this tutorial contains misleading or false information, or fails to mention some vital aspect of gameplay.
This trope is for those tutorials which do an inadequate job of what they're supposed to do - the kind that leave the player frustrated that they can't perform that seemingly simple move, or wrap their heads around a gameplay system which seems straightforward. But what happens when a tutorial fails to do its job? Then you've got a Tutorial Failure.